Gael theodoe bemus



(No Model.)

0. T. REMUS.

CORNER PA'STE'NER FOR BOXES. No. 329,081 Patented Oct. 27, 1885.

WITNESSES WM. QMM.

UNITEn STATES PATENT OFFICE.

CARL THEODOR REMUS, OF DRESDEN, SAXONY, GERMANY, ASSIGNOR -OF ONE-HALF TO JEAN SCHERBEL, OF SAME PLACE.

CORNER- -FASTENER FOR BOXES.

SPECIFICATION forming part of Letters Patent No. 329,081, dated October 27, 1885.

Application filed August 5, 1885. Serial No. 173,599. (No model.) Patented in England July15, 1885, No. 8,590.

To aZZ whom it may concern:

Be it known that I, CARL THEODOR REMUS, of Dresden, in the Kingdom of Saxony, Empire of Germany, have invented certain new and useful Improvements in Oorner-Fasteners for Boxes, of which the following is a specification.

My invention has reference to an improved metal corner-fastening for boxes of wood, pasteboard, leather, or similar material; and the invention consists of an obtuse-angled strip of metal, the outer edges of which run parallel with the middle edge or apex, said edge being also bent up and provided with inwardly-projecting teeth punched from the body of the strip.

In the accompanying drawings, Figure 1 represents afront elevation of my improved corner-fastener for boxes. Fig. 2 is a horizontal section of the same. Fig. 3 is a vertical transverse section, shown in position to be at tached to a box; and Fig. 4c a horizontal section of the fastener, shown as attached to the box.

Similar letters of reference indicate corresponding parts.

In the drawings, a represents a thin strip of metal, which is bent lengthwise at an obtuse angle in such a way that the edges are equidistant from and parallel to the apex of the strip. The edges 1) b are again bent at obtuse angles to the bodyof the strip, as shown clearly in Fig. 2. Two rows of teeth, I) b, are cut from the body of the strip a along the edges 1) b, the points of the teeth of one row being opposite the points of the teeth of the other row. The shape of the teeth, as shown in Fig. 1, is that of an equilateral triangle, the points being formed by the two equal sides, while the uncut base of the teeth is in aline with the apex of the angle formed by the edges 1) b and the body of the strip a. The teeth I) I) extend at an acute angle of inclination from the body of the strip a, and in such a manner that two lines drawn from the points of two opposite teeth to the center edge or ridge of the strip will intersect each other at right angles. The angle of inclination of the teeth is changed and made larger or smaller, accordingly as the fastener is applied to box-corners having edges of other than rectangular shape. The corners of the walls of the box to be joined are first mitered in such a way as to produce the required angle. The mitered edges are then brought together, so as to abut on a fixed horizontal support, e, at an angle corresponding to the angle of the box, as shown in Fig. 3. In order to attach the corner-fastener to the box, a plunger, 7, of the same angle as the support 6, is used, into which the fastener a is inserted and retained at the edges by means of two springs, g g, which are attached to the sides of the plunger. By pressing down the plunger f the teeth of the fastener a are driven into the material of the walls a and d of the box. Owing to the inclination of the teeth I) b to the body of the strip out of which they are formed, the teeth pass obliquely into the walls 0 d in such a manner as to be entirely embedded in the same, as shown in Fig. 4, and act thereby as anchors or books that prevent the walls cand d from spreading or opening. As the plunger forces the teeth of the fastener into the walls 0 d the springs will come in contact with the walls or surfaces 0 and d and spread apart, so as to release the fastener. The pressure of the plunger f on the fastener causes the middle edge or ridge of the strip to assume the exact shape of the corner of the box, while both side ridges or edges are flattened out completely, so as to become straight and even.

My fastener has the advantage that the teeth are entirely embedded in the walls of the box, and that the interior surface of the box remains entirely smooth, without any protruding of the teeth that might exert an injurious influence on the contents of the box. For this purpose the size and angle of the teeth have to be adapted to the thickness and kind of material to which this fastener is to be ap plied. v

Having thus described my invention, I claim as new and desire to secure by Letters Patent A cornerfastener for boxes composed of an obtuse-angled metallic strip having bent edges provided with inwardly-projecting teeth, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OARL THEODOR REMUS.

WVitn esses:

PAUL DRUoKMiiLLER, CARL SoHRoDER. 

